Great news for those looking to knock some weight off their car. Antigravity Batteries updated their lithium-ion lightweight battery lineup with three options which feature a brand new wireless key fob remote for emergency starts.

Yes, that means should you return to a dead battery you press a button and you get a wireless jumpstart. This resolves an issue where with previous battery designs you would need to physically press buttons on the battery for a restart but also needed electrical power to pop the trunk and reach said battery.

The new battery design also does not require a tray but will just pop right into the place of you old battery.

Scott from Antigravity explains below.

Scott from Antigravity Batteries here, I wanted to drop some information on our NEWEST Lithium Batteries... yes they are actually ground-breaking!

– To start, we wanted to make our newest battery accessible for more Vehicles and Customers. We found many people just wanted the EXACT SIZE that fit in their car. So that is what we did, the new batteries are a DIRECT OEM FIT. Meaning it is the same size as your stock battery, so you will not need a special tray or any other adapters or modifications to mount them. Most of you will just be concerned with the H6/Group48 size battery. So we did that size and also the H5 and H7. Plus we will have Group 35 ,and Group 51 and expand out from there. But the "H" sizes are used in most Euro Sports Cars including BMW, Audi, Porsche, Ferrari, Lamborghini, etc.... so these will fit them all.

– We have also made the batteries available in different amp hours. The Amp Hours Capacities available for the H6/Group48 model are 24Ah, 30Ah, and 40Ah. By offering different amp hours the Customer can choose a battery that is more tailored to what they are looking for. For example people who track and want the lightest weight possible might want the 24Ah (9.5lbs), a person who wants to have a solid Ah yet still benefit substantially from Lightweight can go with a 30Ah (11.5lbs) and a person who might have some Cameras, Radar Detectors, luxury options and other stuff on the Car might want a 40Ah Battery (16lbs). Keep in mind if you use a 24Ah battery you will not have as much time that the car can sit in storage compared to a 40Ah model.

– SUPER COOL NEW FEATURE ALERT!!! So one of the ULTRA-COOL items we developed into this latest battery (yep, first in the world) is a WIRELESS KEYFOB REMOTE that is used to operate our RE-START built in Jump-Starting feature. If you are not familiar with our RE-START feature, its basically a built-in jump starting for the battery, so in the event you ever come back to a dead battery you can awaken the battery with the Keyfob and start the car and drive off. So in effect you would never be stranded with a dead battery!

- Weight of the Batteries H6/Group48 Case @24Ah is 9.8 lbs , H6/Group48 Case @30Ah is (11.5lbs) , H6/Group48 Case @40Ah is (16.5.5lbs) so you definitely have some options for dropping some weight.

-Availability.... finished production will be at the end of February we expect to be shipping in first week of March. We are initially doing the 24Ah and 40Ah models, the 30Ah Version will not be in until April. I currently have 10 pieces of H6 @24Ah models and 10 pieces of H6 @ 40Ah that we have used to take pictures, and develop Marketing materials, some we will be sent Industry people, but unfortunately that is not enough to openly sell them yet. So early March if not a week before we can start shipping.

Some pictures are below... if you have any questions please let me know.

Hey All, yes all should be fine. The BMWs are a little funky being that you have to Code them and Register them. And being honest we are not supplying alot of BMWs as the Porsche, Mustang, Viper, Lambo, Vette type people are a bit more interested. But the new battery is designed to work with modern Start/STop and the IBS systems of Cars. The only issue is that BMW is requiring a Registration number off the battery, or for a new battery you put in... but you can just swap out the battery, and not change the code since most are AGM is should just work fine without any coding. but the registration number is the kicker IF you get a new battery and it requesting one... you should be able to use the original one off the original battery or just take one of another battery. Or don't even tell the car you are swapping the batteries...

The reason they do all that coding is the change the charging curve for particular battery types, and also for a few other reasons such as the start/stop systems. Anyway what year are you talking about? WE have alot of guys who are track guys using our really small ones without issues. I will try to talk to those shops that are doing that and get back to you.

Ok cool I'd like to hear what those track guys say! I have a 2017 BMW m2 with a 92ah battery, I will try to upload an image.

The reason why I ask of we need to register the battery is because I'm afraid if the car will overcharge the battery, since lithium ions run at lower voltages than the stock AGM. I heard you guys had over charge protection, and if that is the case and it stops charging early to save the battery, will the car get upset and throw a code?

I've also read from alot of other guys you cannot code the IBS below ~13.7 volts (I can't remember exactly), which would still be too high for the lithium battery, so I'm worried about either over charging or error codes that will pop up.

Finally, what is the difference between your new batteries and the current RS30 (besides the wireless restart switch)? And if we have alot of equipment in the car, and frequently run the battery to or near it's auto cut off will this cause any long term I'll effects? Or is this ok because there is enough power in the auto restart to prevent the lithium ion battery from being cycled too low and causing damage.

PS: which one fits for 92ah BMW batteries, and which trickle charger is supported - I heard ctek has a lithium charger but I don't know for sure.

Ok cool I'd like to hear what those track guys say! I have a 2017 BMW m2 with a 92ah battery, I will try to upload an image.

The reason why I ask of we need to register the battery is because I'm afraid if the car will overcharge the battery, since lithium ions run at lower voltages than the stock AGM. I heard you guys had over charge protection, and if that is the case and it stops charging early to save the battery, will the car get upset and throw a code?

I've also read from alot of other guys you cannot code the IBS below ~13.7 volts (I can't remember exactly), which would still be too high for the lithium battery, so I'm worried about either over charging or error codes that will pop up.

Finally, what is the difference between your new batteries and the current RS30 (besides the wireless restart switch)? And if we have alot of equipment in the car, and frequently run the battery to or near it's auto cut off will this cause any long term I'll effects? Or is this ok because there is enough power in the auto restart to prevent the lithium ion battery from being cycled too low and causing damage.

PS: which one fits for 92ah BMW batteries, and which trickle charger is supported - I heard ctek has a lithium charger but I don't know for sure.

To answer some of your questions...

1- Yes you should not over-charge a Lithium Battery but an AGM profile is actually a fine profile for Lithium at roughly 13.7v... that is very low actually. Our lithium was designed for up to 14.6v which is fine with most any charging profile. So you also know, lithium has a higher threshold that you are thinking. The chemistry we use Lifepo4 takes up to 14.6v for charging. 15v is overcharging, but we say nothing above 14.6 to be conservative... and that is how the Auto industry also is but in many cases lower.

2-The difference on the RS30 vs the NEW battery, what we are calling the OEM RE-STARTS are.... The RE-START feature is now Wireless... you don't have to physically press the button on the battery anymore. Its a wireless keyfob that comes with the battery. Secondly its a DROP-IN-FIT OEM sizes now. Whereas the RS-30 needed a Tray to mimic the OEM Mounting base. So we have the H6 and H7 sizes that most BMWs have. So it a more user friendly battery for the masses. We also offer it in different Amp Hour Capacities... from 24Ah to 40Ah.... The 30Ah varients are out in April.

3- Note that the 92Ah Battery mounting area can actually adapt other size batteries.... for example a 92Ah could be an H8 size, but the H7, and H6 sizes will also work in that location because they all the the same WIDTH and HIEGHT and only the LENGTH changes.... but the length usually does not have the mounting cleats so you can use the other sizes as well since it mounts from front to back ... not from size to side.

4- Yes CTEK make a Lithium charger. We sell a brand called Optimate that has a little more in features but they are both good.

You didn't answer my last question, will the battery be affected negatively if we use the battery all the way down to the restart mode frequently? I don't know if that counts as a deep cycle since the battery shuts itself off.

You didn't answer my last question, will the battery be affected negatively if we use the battery all the way down to the restart mode frequently? I don't know if that counts as a deep cycle since the battery shuts itself off.

No this shouldn't affect it as the BMS(Battery Management System) is stopping you from putting the battery in a state of over discharge where it is susceptible to damage. The key here of course being once you engage the restart to actually drive the vehicle and allow the battery to be charged up and topped back off.

[QUOTE=Antigravity Batteries;816721]No this shouldn't affect it as the BMS(Battery Management System) is stopping you from putting the battery in a state of over discharge where it is susceptible to damage. The key here of course being once you engage the restart to actually drive the vehicle and allow the battery to be charged up and topped back off.

Thanks for the answer, ps: what size should I order based on the image of the battery I attached above?

Also what is the life cycle for one of these lithium batteries (in terms of years and charge cycles - because I don't drive my car too often and I hope that doesn't mean it'll degrade over time)? I hope they last a good while because they're really expensive.

For 911 he just told me 6 weeks without charge (in case someone else has same question).

I was curious about how many charge cycles the battery could handle before it dies. Or if the battery is left to sit from infrequent usage will the chemicals inside degrade so essentially is there a lifespan in terms of recharge cycles, and if that isn't reached is there an "expiry date" for the battery. Pretty much like car warranties "4 years or 80,000km whatever comes first". But in this case it would be "x cycles, or Y years what ever comes first".